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| author | Md Haris Iqbal <haris.iqbal@ionos.com> | 2025-12-05 15:47:33 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2026-01-06 15:28:10 +0300 |
| commit | 69d26698e4fd44935510553809007151b2fe4db5 (patch) | |
| tree | fe05484be7e64830d392d2ddef6f475d95a0bc12 | |
| parent | 4ac9690d4b9456ca1d5276d86547fa2e7cd47684 (diff) | |
| download | linux-69d26698e4fd44935510553809007151b2fe4db5.tar.xz | |
rnbd-srv: Zero the rsp buffer before using it
Before using the data buffer to send back the response message, zero it
completely. This prevents any stray bytes to be picked up by the client
side when there the message is exchanged between different protocol
versions.
Signed-off-by: Md Haris Iqbal <haris.iqbal@ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Grzegorz Prajsner <grzegorz.prajsner@ionos.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | drivers/block/rnbd/rnbd-srv.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/block/rnbd/rnbd-srv.c b/drivers/block/rnbd/rnbd-srv.c index 9b3fdc202e15..7eeb321d6140 100644 --- a/drivers/block/rnbd/rnbd-srv.c +++ b/drivers/block/rnbd/rnbd-srv.c @@ -551,6 +551,8 @@ static void rnbd_srv_fill_msg_open_rsp(struct rnbd_msg_open_rsp *rsp, { struct block_device *bdev = file_bdev(sess_dev->bdev_file); + memset(rsp, 0, sizeof(*rsp)); + rsp->hdr.type = cpu_to_le16(RNBD_MSG_OPEN_RSP); rsp->device_id = cpu_to_le32(sess_dev->device_id); rsp->nsectors = cpu_to_le64(bdev_nr_sectors(bdev)); @@ -657,6 +659,7 @@ static void process_msg_sess_info(struct rnbd_srv_session *srv_sess, trace_process_msg_sess_info(srv_sess, sess_info_msg); + memset(rsp, 0, sizeof(*rsp)); rsp->hdr.type = cpu_to_le16(RNBD_MSG_SESS_INFO_RSP); rsp->ver = srv_sess->ver; } |